Introduction:
The vertebral column is also referred to as the spinal column. It is a part of the body that is responsible for the protection of the spinal cord. It supports the head and the skull. The vertebrae are the parts of the vertebral column.
Answer to Problem 1RAC
The correct answer is option (d) level of the foramen magnum to the second lumbar vertebra.
Explanation of Solution
Explanation/justification for the correct answer:
Option (d) level of the foramen magnum to the second lumbar vertebra. The spinal cord is a very important structure that extends from the brain at the particular level of foramen magnum down to the second lumbar vertebra. It is relatively shorter than the vertebral column due to the lack of rapid growth during the developmental stages. So, the correct answer is option (c).
Explanation for incorrect answer:
Option (a) medulla oblongata to the coccyx. The spinal cord does not extend from medulla oblongata to the coccyx. So, this is an incorrect option.
Option (b) level of the third cervical vertebra to the coccyx. The extension of the spinal cord occurs from the level of the foramen magnum to the second lumbar vertebra. So, this is an incorrect answer.
Option (c) level of the axis to the lowest lumbar vertebra. The spinal cord does not extend from the level of the axis to the lowest lumbar vertebra. So, this is an incorrect answer.
Option (e) axis to the sacral hiatus. The extension of the spinal cord does not take place from the axis to the sacral hiatus. So, this is an incorrect answer.
Thus, an extension of the spinal cord occurs from the level of the foramen magnum to the second lumbar vertebra. Hence, the correct answer is option (d) level of the foramen magnum to the second lumbar vertebra.
Want to see more full solutions like this?
Chapter 12 Solutions
SEELEY'S ANATOMY+PHYSIOLOGY
- You are assessing a spinal trauma patient who is complaining of pain at T1. where would you expect to see a change in response as you assess the patient to determine if there is cord involvement at this level? A) at the nipple line. B) at the 2nd Intercostal space. C) at the index finger and sternal notch. D) at the little finger and 2nd intercostal space.arrow_forward(a) What are the superior and inferior boundaries of the spinal cord in the vertebral canal? (b) A correctly executed lumbar spinal tap could poke the cauda equina or filum terminale, but not the conus medullaris. Explain.arrow_forwardSpinal nerves are called mixed nerves because they (a) are associated with a pair of dorsal root ganglia. (b) exit at intervertebral foramina. (c) contain sensory and motor fibers. (d) are associated with a pair of dorsal and ventral roots.arrow_forward
- Carpal tunnel syndrome is caused by compression of which nerve?arrow_forwardWhich structure sends motor nerve signals to the deep back muscles and receives sensory nerve signals from the skin of the back? a. posterior root b. posterior ramus c. anterior root d. anterior ramusarrow_forwardAn anesthetic blocks the function of the dorsal rami of the cervical spinal nerves. Which areas of the body will be affected?arrow_forward
- Damage to the surface tissue of the spinal cord will most likely affecta. information processing within the spinal cord.b. the stimulation of sensory organs.c. communication between the peripheral nervous system and the brain.d. reflex arcs.arrow_forwardSelect the correct one, Which structure sends motor nerve signals to the deep back muscles and receives sensory nerve signals from the skin of the back? a. posterior root b. posterior ramus c. anterior root d. anterior ramusarrow_forwardAn intervertebral disc is a layer of cartilage that separates adjacent vertebrae in the spine. In terms of impulse, how does it protect the spinal system from damage during accidents?arrow_forward
- Sketch a cross section of the spinal cord showing the anterior and posterior horns. Where are the gray and white matter? Where are the columns and tracts?arrow_forwardIf someone were to experience damage in the spinal cord that results in only a decreased ability to supinate the manus, where did the stroke most likely occur? Group of answer choices The posterior horn of the lower thoracic region The anterior horn of the lower thoracic region The lateral horn of the lower thoracic region The posterior horn of the cervical region The anterior horn of the cervical region The lateral horn of the cervical regionarrow_forwardexplain spinal damage in terms of the function of the cardiovascular functionarrow_forward
- Surgical Tech For Surgical Tech Pos CareHealth & NutritionISBN:9781337648868Author:AssociationPublisher:Cengage
- Fundamentals of Sectional Anatomy: An Imaging App...BiologyISBN:9781133960867Author:Denise L. LazoPublisher:Cengage Learning